Smart Contract-Based Access Control for the Vehicular Networks

In Ad-hoc Networks (VANETs), vehicles exchange safety and road information in order to reduce the number of accidents on the road and get the best updated information to optimize their road path. However, the secure communications face big challenges in the VANETs. In a previous work, we have proposed a distributed trust management scheme based on the blockchain technology in order to provide a secure vehicle communication by checking the correctness of the message. For this purpose, the Blockchain facilitates the sharing of secure in-formation or messages among vehicles. However, vehicles cannot share the resources with other entities using only the blockchain and cannot manage to access control their resources. In order to provide an access control policies of the resources requested by the vehicle, we propose a distributed access control model for vehicles based on smart contracts and ABAC model to share the resources through miners. Then, we evaluate the execution time and the storage of the proposal.